[Pytorch] Add Vulkan support for aten::unsqueeze for 2d to 3d (#101719)
Summary: Unsqueeze operator: https://pytorch.org/docs/stable/generated/torch.unsqueeze.html#torch.unsqueeze
Test Plan:
Unsqueeze tests:
https://www.internalfb.com/phabricator/paste/view/P738187802
```
lfq@lfq-mbp fbsource % buck run --target-platforms ovr_config//platform/macos:arm64-fbsource //xplat/caffe2:pt_vulkan_api_test_binAppleMac\#macosx-arm64 -c pt.vulkan_full_precision=1 -- --gtest_filter="*unsqueeze*"
Downloaded 0/2 artifacts, 0.00 bytes, 100.0% cache miss (for updated rules)
Building: finished in 15.0 sec (100%) 455/455 jobs, 2/455 updated
Total time: 15.0 sec
BUILD SUCCEEDED
Running main() from xplat/third-party/gmock/googletest-1.12.1/googletest/src/gtest_main.cc
Note: Google Test filter = *unsqueeze*
[==========] Running 3 tests from 1 test suite.
[----------] Global test environment set-up.
[----------] 3 tests from VulkanAPITest
[ RUN ] VulkanAPITest.unsqueeze_dim0
[ OK ] VulkanAPITest.unsqueeze_dim0 (96 ms)
[ RUN ] VulkanAPITest.unsqueeze_dim1
[ OK ] VulkanAPITest.unsqueeze_dim1 (2 ms)
[ RUN ] VulkanAPITest.unsqueeze_dim2
[ OK ] VulkanAPITest.unsqueeze_dim2 (3 ms)
[----------] 3 tests from VulkanAPITest (101 ms total)
[----------] Global test environment tear-down
[==========] 3 tests from 1 test suite ran. (101 ms total)
[ PASSED ] 3 tests.
```
All tests:
buck run //xplat/caffe2:pt_vulkan_api_test_binAppleMac\#macosx-arm64
https://www.internalfb.com/phabricator/paste/view/P738255852
Reviewed By: SS-JIA
Differential Revision: D45893511
Pull Request resolved: https://github.com/pytorch/pytorch/pull/101719
Approved by: https://github.com/SS-JIA
